Loudspeaker



FIG. 1 is a perspective view of a loudspeaker as seen from the front, top and left side;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dotted lines shown in the drawings depict portions of the loudspeaker that form no part of the claimed design. 

CLAIM The ornamental design for a loudspeaker, as shown and described. 